19–24 May 2024
Music City Center
US/Central timezone

Characterization of radiation damages to positron source materials

TUPC81
21 May 2024, 16:00
2h
Country (MCC Exhibit Hall A)

Country

MCC Exhibit Hall A

Poster Presentation MC3.A21 Secondary Beams Tuesday Poster Session

Speaker

Andriy Ushakov (Thomas Jefferson National Accelerator Facility)

Description

The secondary beam production target at future positron sources at the Continuous Electron Beam Accelerator Facility (CEBAF), the International Linear Collider (ILC) or the Future Circular Collider (FCC), features unprecedented mechanical and thermal stresses which may compromise sustainable and reliable operation. Candidate materials are required to possess high melting temperature together with excellent thermal conductivity, elasticity and radiation hardness properties. In order to substantiate the material choice for the CEBAF and ILC positron sources, the response of candidate materials such as titanium alloys, tungsten, and tantalum to electron beam irradiation was experimentally investigated. CEBAF and ILC expected operating conditions were mimicked using the 3.5 MeV electron beam of the MAMI facility injector. The material degradations were precisely analyzed via high energy X-ray diffraction at the HEMS beamline operated by the Helmholtz-Zentrum Hereon at the PETRA III synchrotron facility. This work reports the results of these measurements and their interpretation.

Funding Agency

European Union’s Horizon 2020 under agreement STRONG - 2020 – No 824093, and the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177.

Region represented Europe
Paper preparation format LaTeX

Primary author

Tim Lengler (Helmholtz-Zentrum Geesthacht)

Co-authors

Alice Thiebault (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Andriy Ushakov (Thomas Jefferson National Accelerator Facility) Brice Geoffroy (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Christine Le Galliard (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Dieter Lott (Helmholtz-Zentrum Geesthacht) Eric Voutier (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Frederick Gauthier (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Gudrid Moortgat-Pick (Deutsches Elektronen-Synchrotron) Dr Joseph Grames (Thomas Jefferson National Accelerator Facility) Kurt Aulenbacher (Institut für Kernphysik) Manuel Formela (University of Hamburg) Marco Dehn (Johannes Gutenberg University Mainz) Remy Dorkel (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Sabine Riemann (Deutsches Elektronen-Synchrotron) Sami Habet (Thomas Jefferson National Accelerator Facility) Sandry Wallon (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Thomas Beiser (Helmholtz Institut Mainz)

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